1
早上好夥伴外溢者,如何從所涉及的所有表中刪除記錄?
模型關聯的小問題。我有這些模型關聯: categorization_id
,exhibit_id
和category_id
:
class Categorization < ActiveRecord::Base
belongs_to :exhibit
belongs_to :category
end
class Category < ActiveRecord::Base
has_many :categorizations
has_many :exhibits, :through => :categorizations
acts_as_indexed :fields => [:title]
validates :title, :presence => true, :uniqueness => true
end
class Exhibit < ActiveRecord::Base
has_many :categorizations
has_many :categories, :through => :categorizations, :source => :category
acts_as_indexed :fields => [:title, :bulb]
validates :title, :presence => true, :uniqueness => true
belongs_to :foto, :class_name => 'Image'
end
所以,本質上Categorization
這些列(省略日期/時間標記)結束。
我的問題是,當我刪除一個Exhibit時,它對Categorization表的引用不會被刪除,因此在我的視圖中會出現數據庫錯誤。我必須先取消任何類別的展覽,然後將其安全地刪除。或者(舉例來說,圖表I刪除有:exhibit_id=>'1'
)當我在rails console
:Categorization.find_by_exhibit_id(1).destroy
感謝您的任何幫助!
...我們有贏家!謝謝你,卡斯帕它像一個魅力工作.. – Cacofonix